Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 1 | /* |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 2 | * Copyright (c) 2001,2002 Damien Miller. All rights reserved. |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * |
| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 15 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 16 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 19 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 20 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 | */ |
| 24 | |
| 25 | #include "includes.h" |
| 26 | |
Damien Miller | ec69203 | 2004-01-27 21:22:00 +1100 | [diff] [blame] | 27 | RCSID("$OpenBSD: sftp.c,v 1.41 2004/01/27 10:08:10 djm Exp $"); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 28 | |
| 29 | #include "buffer.h" |
| 30 | #include "xmalloc.h" |
| 31 | #include "log.h" |
| 32 | #include "pathnames.h" |
Ben Lindstrom | 4529b70 | 2001-05-03 23:39:53 +0000 | [diff] [blame] | 33 | #include "misc.h" |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 34 | |
| 35 | #include "sftp.h" |
| 36 | #include "sftp-common.h" |
| 37 | #include "sftp-client.h" |
| 38 | #include "sftp-int.h" |
| 39 | |
Kevin Steves | 12888d1 | 2001-03-05 19:50:57 +0000 | [diff] [blame] | 40 | #ifdef HAVE___PROGNAME |
| 41 | extern char *__progname; |
| 42 | #else |
| 43 | char *__progname; |
| 44 | #endif |
| 45 | |
Damien Miller | e4f5a82 | 2004-01-21 14:11:05 +1100 | [diff] [blame] | 46 | FILE* infile; |
Damien Miller | 44f75c1 | 2004-01-21 10:58:47 +1100 | [diff] [blame] | 47 | int batchmode = 0; |
Damien Miller | 8829d36 | 2002-02-08 22:04:05 +1100 | [diff] [blame] | 48 | size_t copy_buffer_len = 32768; |
Damien Miller | 16a1333 | 2002-02-13 14:03:56 +1100 | [diff] [blame] | 49 | size_t num_requests = 16; |
Damien Miller | cc685c1 | 2003-06-04 22:51:38 +1000 | [diff] [blame] | 50 | static pid_t sshpid = -1; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 51 | |
Damien Miller | 62d57f6 | 2003-01-10 21:43:24 +1100 | [diff] [blame] | 52 | extern int showprogress; |
| 53 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 54 | static void |
Damien Miller | cc685c1 | 2003-06-04 22:51:38 +1000 | [diff] [blame] | 55 | killchild(int signo) |
| 56 | { |
| 57 | if (sshpid > 1) |
| 58 | kill(sshpid, signo); |
| 59 | |
| 60 | _exit(1); |
| 61 | } |
| 62 | |
| 63 | static void |
| 64 | connect_to_server(char *path, char **args, int *in, int *out) |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 65 | { |
| 66 | int c_in, c_out; |
Ben Lindstrom | b1f483f | 2002-06-23 21:27:18 +0000 | [diff] [blame] | 67 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 68 | #ifdef USE_PIPES |
| 69 | int pin[2], pout[2]; |
Ben Lindstrom | b1f483f | 2002-06-23 21:27:18 +0000 | [diff] [blame] | 70 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 71 | if ((pipe(pin) == -1) || (pipe(pout) == -1)) |
| 72 | fatal("pipe: %s", strerror(errno)); |
| 73 | *in = pin[0]; |
| 74 | *out = pout[1]; |
| 75 | c_in = pout[0]; |
| 76 | c_out = pin[1]; |
| 77 | #else /* USE_PIPES */ |
| 78 | int inout[2]; |
Ben Lindstrom | b1f483f | 2002-06-23 21:27:18 +0000 | [diff] [blame] | 79 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 80 | if (socketpair(AF_UNIX, SOCK_STREAM, 0, inout) == -1) |
| 81 | fatal("socketpair: %s", strerror(errno)); |
| 82 | *in = *out = inout[0]; |
| 83 | c_in = c_out = inout[1]; |
| 84 | #endif /* USE_PIPES */ |
| 85 | |
Damien Miller | cc685c1 | 2003-06-04 22:51:38 +1000 | [diff] [blame] | 86 | if ((sshpid = fork()) == -1) |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 87 | fatal("fork: %s", strerror(errno)); |
Damien Miller | cc685c1 | 2003-06-04 22:51:38 +1000 | [diff] [blame] | 88 | else if (sshpid == 0) { |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 89 | if ((dup2(c_in, STDIN_FILENO) == -1) || |
| 90 | (dup2(c_out, STDOUT_FILENO) == -1)) { |
| 91 | fprintf(stderr, "dup2: %s\n", strerror(errno)); |
| 92 | exit(1); |
| 93 | } |
| 94 | close(*in); |
| 95 | close(*out); |
| 96 | close(c_in); |
| 97 | close(c_out); |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 98 | execv(path, args); |
| 99 | fprintf(stderr, "exec: %s: %s\n", path, strerror(errno)); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 100 | exit(1); |
| 101 | } |
| 102 | |
Damien Miller | cc685c1 | 2003-06-04 22:51:38 +1000 | [diff] [blame] | 103 | signal(SIGTERM, killchild); |
| 104 | signal(SIGINT, killchild); |
| 105 | signal(SIGHUP, killchild); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 106 | close(c_in); |
| 107 | close(c_out); |
| 108 | } |
| 109 | |
Ben Lindstrom | bba8121 | 2001-06-25 05:01:22 +0000 | [diff] [blame] | 110 | static void |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 111 | usage(void) |
| 112 | { |
Damien Miller | 025e01c | 2002-02-08 22:06:29 +1100 | [diff] [blame] | 113 | extern char *__progname; |
Ben Lindstrom | 6328ab3 | 2002-03-22 02:54:23 +0000 | [diff] [blame] | 114 | |
Ben Lindstrom | 1e24324 | 2001-09-18 05:38:44 +0000 | [diff] [blame] | 115 | fprintf(stderr, |
Darren Tucker | 1f20394 | 2003-10-15 15:50:42 +1000 | [diff] [blame] | 116 | "usage: %s [-1Cv] [-B buffer_size] [-b batchfile] [-F ssh_config]\n" |
| 117 | " [-o ssh_option] [-P sftp_server_path] [-R num_requests]\n" |
| 118 | " [-S program] [-s subsystem | sftp_server] host\n" |
| 119 | " %s [[user@]host[:file [file]]]\n" |
| 120 | " %s [[user@]host[:dir[/]]]\n" |
| 121 | " %s -b batchfile [user@]host\n", __progname, __progname, __progname, __progname); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 122 | exit(1); |
| 123 | } |
| 124 | |
Kevin Steves | ef4eea9 | 2001-02-05 12:42:17 +0000 | [diff] [blame] | 125 | int |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 126 | main(int argc, char **argv) |
| 127 | { |
Damien Miller | 956f3fb | 2003-01-10 21:40:00 +1100 | [diff] [blame] | 128 | int in, out, ch, err; |
Ben Lindstrom | 63667f6 | 2001-04-13 00:00:14 +0000 | [diff] [blame] | 129 | char *host, *userhost, *cp, *file2; |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 130 | int debug_level = 0, sshver = 2; |
| 131 | char *file1 = NULL, *sftp_server = NULL; |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 132 | char *ssh_program = _PATH_SSH_PROGRAM, *sftp_direct = NULL; |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 133 | LogLevel ll = SYSLOG_LEVEL_INFO; |
| 134 | arglist args; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 135 | extern int optind; |
| 136 | extern char *optarg; |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 137 | |
Damien Miller | 59d3d5b | 2003-08-22 09:34:41 +1000 | [diff] [blame] | 138 | __progname = ssh_get_progname(argv[0]); |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 139 | args.list = NULL; |
Damien Miller | 9f0f5c6 | 2001-12-21 14:45:46 +1100 | [diff] [blame] | 140 | addargs(&args, "ssh"); /* overwritten with ssh_program */ |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 141 | addargs(&args, "-oForwardX11 no"); |
| 142 | addargs(&args, "-oForwardAgent no"); |
Ben Lindstrom | 2b7a0e9 | 2001-09-20 00:57:55 +0000 | [diff] [blame] | 143 | addargs(&args, "-oClearAllForwardings yes"); |
Damien Miller | e4f5a82 | 2004-01-21 14:11:05 +1100 | [diff] [blame] | 144 | |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 145 | ll = SYSLOG_LEVEL_INFO; |
Damien Miller | e4f5a82 | 2004-01-21 14:11:05 +1100 | [diff] [blame] | 146 | infile = stdin; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 147 | |
Damien Miller | 16a1333 | 2002-02-13 14:03:56 +1100 | [diff] [blame] | 148 | while ((ch = getopt(argc, argv, "1hvCo:s:S:b:B:F:P:R:")) != -1) { |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 149 | switch (ch) { |
| 150 | case 'C': |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 151 | addargs(&args, "-C"); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 152 | break; |
| 153 | case 'v': |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 154 | if (debug_level < 3) { |
| 155 | addargs(&args, "-v"); |
| 156 | ll = SYSLOG_LEVEL_DEBUG1 + debug_level; |
| 157 | } |
| 158 | debug_level++; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 159 | break; |
Ben Lindstrom | 1e24324 | 2001-09-18 05:38:44 +0000 | [diff] [blame] | 160 | case 'F': |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 161 | case 'o': |
Ben Lindstrom | 1e24324 | 2001-09-18 05:38:44 +0000 | [diff] [blame] | 162 | addargs(&args, "-%c%s", ch, optarg); |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 163 | break; |
| 164 | case '1': |
Ben Lindstrom | 387c472 | 2001-05-08 20:27:25 +0000 | [diff] [blame] | 165 | sshver = 1; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 166 | if (sftp_server == NULL) |
| 167 | sftp_server = _PATH_SFTP_SERVER; |
| 168 | break; |
| 169 | case 's': |
| 170 | sftp_server = optarg; |
| 171 | break; |
| 172 | case 'S': |
| 173 | ssh_program = optarg; |
| 174 | break; |
Ben Lindstrom | 562c26b | 2001-03-07 01:26:48 +0000 | [diff] [blame] | 175 | case 'b': |
Damien Miller | 44f75c1 | 2004-01-21 10:58:47 +1100 | [diff] [blame] | 176 | if (batchmode) |
| 177 | fatal("Batch file already specified."); |
| 178 | |
| 179 | /* Allow "-" as stdin */ |
| 180 | if (strcmp(optarg, "-") != 0 && |
| 181 | (infile = fopen(optarg, "r")) == NULL) |
| 182 | fatal("%s (%s).", strerror(errno), optarg); |
Damien Miller | 62d57f6 | 2003-01-10 21:43:24 +1100 | [diff] [blame] | 183 | showprogress = 0; |
Damien Miller | 44f75c1 | 2004-01-21 10:58:47 +1100 | [diff] [blame] | 184 | batchmode = 1; |
Ben Lindstrom | 562c26b | 2001-03-07 01:26:48 +0000 | [diff] [blame] | 185 | break; |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 186 | case 'P': |
| 187 | sftp_direct = optarg; |
| 188 | break; |
Damien Miller | 8829d36 | 2002-02-08 22:04:05 +1100 | [diff] [blame] | 189 | case 'B': |
| 190 | copy_buffer_len = strtol(optarg, &cp, 10); |
| 191 | if (copy_buffer_len == 0 || *cp != '\0') |
| 192 | fatal("Invalid buffer size \"%s\"", optarg); |
| 193 | break; |
Damien Miller | 16a1333 | 2002-02-13 14:03:56 +1100 | [diff] [blame] | 194 | case 'R': |
| 195 | num_requests = strtol(optarg, &cp, 10); |
| 196 | if (num_requests == 0 || *cp != '\0') |
Ben Lindstrom | 6328ab3 | 2002-03-22 02:54:23 +0000 | [diff] [blame] | 197 | fatal("Invalid number of requests \"%s\"", |
Damien Miller | 16a1333 | 2002-02-13 14:03:56 +1100 | [diff] [blame] | 198 | optarg); |
| 199 | break; |
Damien Miller | d7686fd | 2001-02-10 00:40:03 +1100 | [diff] [blame] | 200 | case 'h': |
| 201 | default: |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 202 | usage(); |
| 203 | } |
| 204 | } |
| 205 | |
Ben Lindstrom | 2f3d52a | 2002-04-02 21:06:18 +0000 | [diff] [blame] | 206 | log_init(argv[0], ll, SYSLOG_FACILITY_USER, 1); |
| 207 | |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 208 | if (sftp_direct == NULL) { |
| 209 | if (optind == argc || argc > (optind + 2)) |
| 210 | usage(); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 211 | |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 212 | userhost = xstrdup(argv[optind]); |
| 213 | file2 = argv[optind+1]; |
Ben Lindstrom | 63667f6 | 2001-04-13 00:00:14 +0000 | [diff] [blame] | 214 | |
Ben Lindstrom | c276c12 | 2002-12-23 02:14:51 +0000 | [diff] [blame] | 215 | if ((host = strrchr(userhost, '@')) == NULL) |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 216 | host = userhost; |
| 217 | else { |
| 218 | *host++ = '\0'; |
| 219 | if (!userhost[0]) { |
| 220 | fprintf(stderr, "Missing username\n"); |
| 221 | usage(); |
| 222 | } |
| 223 | addargs(&args, "-l%s",userhost); |
| 224 | } |
| 225 | |
Damien Miller | ec69203 | 2004-01-27 21:22:00 +1100 | [diff] [blame] | 226 | if ((cp = colon(host)) != NULL) { |
| 227 | *cp++ = '\0'; |
| 228 | file1 = cp; |
| 229 | } |
| 230 | |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 231 | host = cleanhostname(host); |
| 232 | if (!*host) { |
| 233 | fprintf(stderr, "Missing hostname\n"); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 234 | usage(); |
| 235 | } |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 236 | |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 237 | addargs(&args, "-oProtocol %d", sshver); |
| 238 | |
| 239 | /* no subsystem if the server-spec contains a '/' */ |
| 240 | if (sftp_server == NULL || strchr(sftp_server, '/') == NULL) |
| 241 | addargs(&args, "-s"); |
| 242 | |
| 243 | addargs(&args, "%s", host); |
Ben Lindstrom | 6328ab3 | 2002-03-22 02:54:23 +0000 | [diff] [blame] | 244 | addargs(&args, "%s", (sftp_server != NULL ? |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 245 | sftp_server : "sftp")); |
| 246 | args.list[0] = ssh_program; |
| 247 | |
Damien Miller | 44f75c1 | 2004-01-21 10:58:47 +1100 | [diff] [blame] | 248 | if (!batchmode) |
| 249 | fprintf(stderr, "Connecting to %s...\n", host); |
Damien Miller | cc685c1 | 2003-06-04 22:51:38 +1000 | [diff] [blame] | 250 | connect_to_server(ssh_program, args.list, &in, &out); |
Damien Miller | d14ee1e | 2002-02-05 12:27:31 +1100 | [diff] [blame] | 251 | } else { |
| 252 | args.list = NULL; |
| 253 | addargs(&args, "sftp-server"); |
| 254 | |
Damien Miller | 44f75c1 | 2004-01-21 10:58:47 +1100 | [diff] [blame] | 255 | if (!batchmode) |
| 256 | fprintf(stderr, "Attaching to %s...\n", sftp_direct); |
Damien Miller | cc685c1 | 2003-06-04 22:51:38 +1000 | [diff] [blame] | 257 | connect_to_server(sftp_direct, args.list, &in, &out); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 258 | } |
| 259 | |
Damien Miller | 956f3fb | 2003-01-10 21:40:00 +1100 | [diff] [blame] | 260 | err = interactive_loop(in, out, file1, file2); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 261 | |
Ben Lindstrom | 10b9bf9 | 2001-02-26 20:04:45 +0000 | [diff] [blame] | 262 | #if !defined(USE_PIPES) |
Ben Lindstrom | 5a6abda | 2002-06-09 19:41:48 +0000 | [diff] [blame] | 263 | shutdown(in, SHUT_RDWR); |
| 264 | shutdown(out, SHUT_RDWR); |
Ben Lindstrom | 10b9bf9 | 2001-02-26 20:04:45 +0000 | [diff] [blame] | 265 | #endif |
| 266 | |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 267 | close(in); |
| 268 | close(out); |
Damien Miller | 44f75c1 | 2004-01-21 10:58:47 +1100 | [diff] [blame] | 269 | if (batchmode) |
Ben Lindstrom | 562c26b | 2001-03-07 01:26:48 +0000 | [diff] [blame] | 270 | fclose(infile); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 271 | |
Ben Lindstrom | 47fd811 | 2002-04-02 20:48:19 +0000 | [diff] [blame] | 272 | while (waitpid(sshpid, NULL, 0) == -1) |
| 273 | if (errno != EINTR) |
| 274 | fatal("Couldn't wait for ssh process: %s", |
| 275 | strerror(errno)); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 276 | |
Damien Miller | 956f3fb | 2003-01-10 21:40:00 +1100 | [diff] [blame] | 277 | exit(err == 0 ? 0 : 1); |
Damien Miller | 3380426 | 2001-02-04 23:20:18 +1100 | [diff] [blame] | 278 | } |